dmaengine: use kmem_cache_zalloc instead of kmem_cache_alloc/memset

Using kmem_cache_zalloc() instead of kmem_cache_alloc() and memset().

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c
index 86895760b598..b9d667851445 100644
--- a/drivers/dma/ioat/dma_v2.c
+++ b/drivers/dma/ioat/dma_v2.c
@@ -434,12 +434,11 @@ static struct ioat_ring_ent *ioat2_alloc_ring_ent(struct dma_chan *chan, gfp_t f
                 return NULL;
         memset(hw, 0, sizeof(*hw));
 
-        desc = kmem_cache_alloc(ioat2_cache, flags);
+        desc = kmem_cache_zalloc(ioat2_cache, flags);
         if (!desc) {
                 pci_pool_free(dma->dma_pool, hw, phys);
                 return NULL;
         }
-        memset(desc, 0, sizeof(*desc));
 
         dma_async_tx_descriptor_init(&desc->txd, chan);
         desc->txd.tx_submit = ioat2_tx_submit_unlock;